Paper-bag machine.



A. L. PARRISH.

PAPER BAG MACHINE.

APILIUATIOH FILED 10110.1, 191s.

1,099,312. Patented June 9,1914.

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1 1 4 L fat 1 Ila/z A. L. PABLRISH.

PAPER BAG MACHINE.

rum-r101! Hum 1320.1, 1913 1,099,31 2, Patented June 9,1914.

5 SHEETS-SHEET LL A. L. PAERISH. PAPER BAG MACHINE.

APPLHXATIUN FILED 1 0. l, 1913. 1,099,312.

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Patented June 9, 1914.

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2' APPLICATION FILED Dh 5,1913. Patented June 9,

5 SHBETB SHEET 6.

AEA L. PJ'AERISH, OF SOUTH BEND, INDIANA.

PAPER-BAG MACHINE.

Specification of Letters Patent.

Patented June 9', 1914.

Anplication filed December 1, 1913. Serial No. 808,931.

T 0 all whom it may concern:

Beit known that I, Asa L. PARRISH, a citizen of the United States, residing in South Bend, in the county of St. Joseph and State of Indiana, have invented a new and useful Improvement in Paper Bag Machines, of which the following is a specifica- 'tion.

This invent-ion relates to improvements in machines for manufacturing satchelbottom bags from bellows tucked tubing. commonly called S. O. S. bags and more particularly to improvements in paper bag machines of the type described in my Patent No. 974,704 granted November 1, 1910.

An object of my invention is to provide a paper bag machine of the'type above indi cated having new mechanisms and improvements in some of the older mechanisms which, when combined and working in unison with each other, cause the various operations upon the tubing and bag bottom to be performed more easily than has heretofore een possible and at the same time giving a vast increase in the capacity of the machine.

More specifically, the objects of my invention are to provide new and improved tab cutting and turning or folding mechanism; improved creasing mechanism; improved side tuck opening mechanism; improved slitting mechanism: and in general to so arrange the parts as to render the machine as a whole more eflicient.

In the drawings forming apart of this specification, Figure 1 is a. side view of parts of a bag machine embodying my improvements, said View being partly in longitudi ual section and partly in side elevation. is an end elevation of the machine shown. in Fig. 1 and looking from the line w l thereof, the pressing roll being omitted. Fig. 3 is a front elevation of the creasiug rolls us the same are viewedfrom the line uo of Fig. 1, parts of said rolls being broken away to more clearlyillustrate the construction. Fig. l is an end view of the rolls shown in Fig. 3, the sh: ring shown in section. Fig. 5 is a transverse sectional View taken substantially in! the um- 2 of Fig. '1 and showing fragments of the bottom opening rolls. Fig. 6 is a top plan view .of the structure shown in Fig. 5 and illustrating in dotted lines the positions of the side tuck openers. Fig. 7 is a detailiview illustrating the movements of the side'tuck openers. as will be explained hereinafter.

Fig. 8 is a perspective fragmentary view showing the tucked tubing former, tube cutting and turning mechanisnr' Figs. 9 and 10 are detail views illustrating the operation of cutting the tab and turning the same. Figs. 11, 12 and 13 are perspective views illustrating the various steps in cutting, creasing, opening and folding of the bag and its bottom. Fig. 14 is a detail view of the. bag be ng formed during one portion of the operation and illustrating a defect which occurs in manufacturing paper bags by former types of machines. Fig. 15 is a de tail view illustrating another diflioulty encountered in manufacturing bags by former types of machines. Fig. 16 illustrates, in front elevation. another form of top creasing roll. Fig. 17 is an enlarged top plan View of one of the side tuck openers and Fig. 18 is a detail view of the tab cutting knife.

Similar references are used to designate the same parts throughout the several views of the drawing, and as will be understood. all parts of the machine are secured to other parts where necessary by bolts, screws and other means common in shop practice which are not shown in the drawing where not deemed necessary.

Referring to the drawing, and more particularly to Fig. 1 thereof. A indicates the base or bed of the machine upon which the various parts and mechanisms of the bag machine are assembl d and secured. A designates the back side of the frame as viewed in Fig. 1, and A designates frag ments of the front or near side of the frame which, in order to better illustrate the mech-.

anism, is nearly all cut away. as shown in said figure. The former post 1 is secured to the base A and t0 the top thereof is secured a tucked tube former 2 of any well known form. over and around which the paper is drawn while being formed into bellows tubing. A rocker arm 3 is pivotally secured to the former post 1 and to the rocker arm is pivotally connected a link 4, the latter being in turn pivotally connected to another rocker arm 5. To the free end of the rocker arm 5 is attached a cam roll 6'in engagement with and operated by cam 7, the roll being held in engagement therewith by the spring 8 secured to ,the rocker arm 3 and the former post l. To the top end o-fthe rocker arm 3 is pivotally connected a lug 9 t6 which is connected a metal strip 10 loosely slidablymounted in groove 11 in the top face of the spine 12 of the former. The former also has secured thereto the former plate 13 located above the reciprocating strip 10. Near the forward'end of the former plate 13 an rotatable with a block 18 fixed to a shaft 19 and rotatable. in the direction indicated by the arrow in Fig. 10. The tab cutting knife 17, as shown more clearly in Fig. 18, is beveled on' its inner face. as indicated at 20, the shape of the knife corresponding to the shape of the tab desired to be cut. The function of this beveled inner edge.20 of theknife is to lift the tab out of the tab opening cut in the paper after the knife 17 haspassed through it into the cooperating corresponding slot 16. The distance between the edges of the tab cut by the knife will be greater than the distance between the corresponding inner surfaces of the knife, with the result that the tab will be frictionally held by the knife when the latter is withdrawn from the slot lfi. This results in turning up the tab l. as indicated in Fig. 9 and as the paper tube is drawn forwardly into the machine the tab P will be engaged on its under side by tab turning bar 21 rigidly secured to the frame and located just above the top of the former plate. This will result in turning the tab P backward upon the paper tube. as indicated in Fig. 10.

in front of thetah cutting and turning mechanisms, the machine is provided with a pair of draw rolls .42. .22 of usual form and mounted on transversely extendin shafts 23-23. which rolls opclatc to pull the pa icr over the former and into the machine. horward of the draw rolls are the creasing and slitting mechani ms which. as shown, comprise upper and lower rolls 24 and 25 mounted respectively on shafts 26 and 27. the upper roll 24. as shown in lfigs. l. 3. L and 6. comprising two similar members 28. 28 spaced from each other. but as shown in Fig. 16. the upper roll may be formed in a single piece. a s indicated at 24 in said figure. Referring now more particularly to Figs. 3 and 4. it will be seen that each member 28 of the upper roll 24. has secured to its inner face a slitting knife 29 adapted to take into correspondingly located slots 30 in the lower roll 25. The slitting knives 29 and coiiperating slots will cut 10n gituclinally extending slits 1n the lower side of the paper tube just within the inner fold; of the bellows tucks P, P, as indicated at P" in Fig. 11, the parts being so timed that these longitudinally extepdmg slits come within the opening P leftwhere the tab P has been cut and turned back. Heretofore, it has been the general practice to ciitthe tubing at this time from the outside of -the tubing to points very near the center, which leaves a very narrow uncut connection, as indicated at P in Fig. 14, between the bag lengths. This connection P bein very narrow, necessitated the diamond of e bag bottom being drawn nearly to a point at its forward end and caused severe straining of the sides of the bag bottom when opening it out into the diamond form with the result that the severe strain caused the connection P" to break apart or tear theinside ed of the diamond. I overcome this difiicu t by forming the two slits P. P, in the bac side of the tubing inside of the inner folds of the bellows tucks which leaves a much wider connection between the bag lengths, the connection having more than twice the strength of the connections formerly left between the bag lengths and also relieving the strain from the point and inside edges of the diamond. Furthermore, byproviding and arranging the slitting knives and slots 29'and 30, as I have shown and dcscribed. I am enabled to dispense with an additional shaft and slitting equipment such ap generally used and located in machines of tiis class to operate upon the paper prior to its being drawn into the draw rolls. To the members 28 of'the upper roll 24 are secured creasing blades 31 which operate in conjunction with correspondingly h cated creasing grooves 32 in the lower roll 25. Said creasin blades and grooves form creases P (see .ig. 11) on the line where the bottom of the bag is folded against its bodyin the usual manner. ()ther creasing blai cs 33 and 34 are secured to the pcriphcries of the upper and lower rolls 24 and :35 respectively. each of the blades 33 and 34 havinga creasinggroove 35 and 36 formed at one side thereof. as shown in Fig. 4. By referring to Figs. 1 and 4. the operation of these creasing blades and grooves will be readily understood. W'hile the bellows fold.- cd tubing is passing between the rolls 24 and 25, the creasing blades 33 and 34 will rotate into contact with the tubing at a position where the side edges of the bag bottom are to be formed and the blades 33 will crease one the upper) face of the tubing and its tuck toward the opposite face of the tubing and its tuck and at the same time the blades 34 will crease the opposite face (bottom) of the tubing and its tuck toward the said first face of the tubing and its tuck.

This operation creases the tubing and its tucks in opposite directions, as indicated at P, P in Fig. 11, the creases extending from each edge toward the center a distance which is substantially the depth of the side tucks and which causes the sides of the diamond form of the bag bottom to fold inwardly and without undue strain upon the sides, of the bag bottom. The aforesaid operation and method of creasing the tubing and its tucks in opposite directions is somewhat similar to those shown in my said patent granted to me. No. 971.780, under date of October 4. 1910. As described in said prior patents. the corresponding creases are formed exactly opposite each other. whereas in the present case. the creasing blades are so positioned and constructed as to lap by each other as they rotate, which causes the creases P, P to be slightly out of alinement with each other. By severe tests I have determined that this non-alinement of the creases P". P is not detrimental and in fact has proven in operation. more satisfactory than with the old style of oscillating plates within the tucks of the tubing, as shown in my said Patent 974.704. the oscillating plates of the latter construction causing more or less trouble because of their oscillating or re versing motion. In the present construction. the rolls 24 and '25. being located near together, act as feed rolls and guide the paper steadily in the line in which it should travel and in this respect is a material improvement over the former style of creasing lu or plates which do not act either as feed rc ls or guides. The rolls 24 and 25 are provided with another set of creasing blades 37 and 38 and correspondingly arran ed cooperating grooves 39 and 40. these b ades and grooves acting on the tubing in the same manner as the blades and grooves 33. 34. 35 and 36 to form the same sort of creases. The blades 37 and 38 and their adjacent grooves are so located that they contact the bellows tubing at a position slightly to the rear of the line upon which the bag length is severed, see Fig. 11 where the creases are indicated at P During the operation of opening the bellows tucked tubing into the diamond form. the edges of the cut tubing have a tendency to turn or fold or bulge outwardly. as indicated at P see Fig. 1%. instead of inwardly as is desirable. with the result. if it is not prevented. of a large number of the bags being mutilated. By creasing the tubing just rearwurdly of the severed line. as I do at P. the same result is accom plished as at the side edge position. In other words. when the side tucks are spread open. the creasei P. P assume the appearance of having been creased from the inside of the tubing and the cut edges of the tub ing turn or fold inwardly in the desired d1- rection as the diamond is being formed.

Located forwardly of the rolls 24 and 25 and secured to the side frames A and A. are supporting brackets 41. the latter being arranged right and left, as viewed most clearly in Fig. 5. Rotatably mounted in the inner ends of each of the brackets 41 is a pin or shaft -12 which, as viewed in Fig. 1. is arranged vertically or at right angles to the position of the line of travel of the pa )er through the machine and, as viewed in Pig.

5, at an angle to the vertical, this particular mounting of the pins 42 being for a purpose about to be explained. Each of the pins or shafts 42 has oscillatably mounted thereon a sleeve 43. the latter being duplicates of each other in design and operation except that one is right hand and the other is left hand. I therefore deem it necessary to explain only one of them. Each sleeve 4? has formed integrally therewith an upper boss 44 and a lower boss 45. the latter having attached thereto one end of a spring 46. the other end of which is secured to an; stationary part of the frame, the spring 46 serving to retract the sleeve 43, as will be ulr derstood. The boss 44 has mounted thereon a cam roll -17 which, through the instrumentality of the spring 46 is held in constant engagement with a cam 48 fixed to the shaft 26.

Each sleeve 43 carries a tuck opener 49 which, as shown in the drawing, is formed integrally with the sleeve. The tuck openers 49 are located in the same horizontal plane which coincides with the longitudinal center line of the machine. Referring now more particularly to Figs. 5, 6, 7 and 17.

it will be seen that each tuck opener is formed with a thin inner. parallel sided edge or extension 50 which is of the same thickness back to and around a circular rear end 51, parallel sided extensions always remaining within the. tucks of the tubing in order that the openers may maintain their position within the tucks with certainty and not be projected upon the outside of the tub ing when moved toward the latter. Each tuck openeris also provided with a double wedgeshape'd portion which is wedge shaped in section transversely and in section longitudinally. which results in said double wedge shaped portion teri'uiuatin in lines extending l'llflgtlllltlly of the tuck openers from the forward inner corners .33 to the outer rear corners 54. Each tuck opener has secured thereto a guiding flange 535' which serves to guide the tubing and keep it from getting out of line sidewise. altl' ough i find. in actual practice, that these guiding flanges are not absolutely essential. .\s will be understood. the cams +8 are so designed and timed as to give the proper motions to the tuck openers when the nnu-hine is runnin roni the foregoing description it will be indicated in Fig.

. position scribed.

' inner edges or extensions to seen that the tuck openers, on account of the angular position of the pins or shafts upon which they are mounted, are given a combined inward and upward movement when being moved into the tl!t'l-IS of the bellows tubing and have a combined outward and downward movement when retracted therefrom. In Fig. 5 the tu l: openers are shown at their innermost position where they hold theside tucks apart for the ad mission of the side grippers. hereinafter de- After the side grippers have grasped the tubing to the opening rolls,here' inafter described. cams 48 permit the tuck openers to be withdrawn outwardly to the position shown in dotted lines at 56 in Fig. (3. This position of the tut-l; openers is also 7 at 57. The tuck openers remain in this outermost position until the next oncoming bag length reaches its opposite the openers when cams 48 art to swing the tuck openers into the side tucks again and the operation repeated. As

will be apparent from an inspection of Fig.

7, the forward end of the tool; opener, when the latter is in its innermost position, is substantially on a hoes ntal line b, b which is located centrally taetween the creasing and slitting rolls .24 and 25 and opening rolls and 59. hen the tuck openers are swung outwardly from the side tucks of the paper. the forward ends th reof are given a downward motion ton amount of the in: clined pivotal mounting ol the sleeve so that the forward ends oi il' tuck openers assume the position as iwit ited at 57, in which positionthe thin inner tensions thereof stand in a line 0, extends from the center of the rolls 2i and 25 tangentially-to the roll 51-5 By referring to Fig. 15. it will be seen that while the diamond of the bag bottom i being flattened down against the body of the bag. both sides of the bag tube and their ta ks all lie close together and follow the periphery of the roll 59. lf "the. tuck openers were left standing within the tucks of the tubing the forward ends thereof would lift or hold back the upper half of the tucks and upper face of the tube and Hitler the tl'titrk P to be drawn backward out of its proper position and cause the wrinkles. as indicated at P" in Fig. 15. and otherwise distort the bag bottom. in order to partially overcome this distortion of the bag. the tuck openers are swung outwardly at. their forward ends after the. side grippers have grasped the tubing. It will be seen. however. that if the tuck openers were swungoutwardly in a horizontal plane or plane perpendicular to the sides of the rolls 58 of the tuck openers would still stand in the horizontal plane located centrally bet a een re two sets of roll i l, 25 and 5b, 5%! and tha therefore the upper face of the tubihg and :39, the thin would have a sharp kink therein as at d see Fig. 7, and would cause the same distortions in the bag as when the tuck openers were in their inner position. 'In order to overcome this difiiculty entirely, the sleeves 43 are supported in the inclined position heretofore described which causes the forward ends of the tuck openers to swing downward at the same time that they are swung outwardly and causes them to assume the position in the line 0, b which is the natural one for the tubing to assume when being drawn over the roll 59 and which does away with the aforesaid distortions of the bag entirely. From the preceding description, it will be seen that these tuck openers are a vast improvement over those heretofore used and insure a successful and speedy operation of the machine. Since they act as guides for the tubing between the rolls 2% and 25, and 58 and 59 they pre vent the paper from being thrown out of line in any manner; they open the side tucks of the tubing and present openings for the entrance of the side grippers that are the same at every b. length; and they withdraw from the si' e tucks to a position that leaves the tubing free to fold into its natural position without causing any undue strain upon it.

Located forward of the Lllt'li openers and supported for rotation are the opening rolls 5b and 59, roll 58 bein.; of substantially the same design as that shown in my said Patent QHJQA with the exception that the bending plate referenced l ll in said patent has been omitted. The roll 5:5 carries the usual cut ting knife (30 and means 61 to apply tension to the paper before it is cut. The roll 58 has side grippers 6E2 mounted upon suitable supports ay each end thereof. The roll 59 is of doublothe diameter of roll as and carries two sets of cutting bars (54 which back the, paper against the cutting knife 61. At each end of the roll :39 are provided two sets of side grippers 65, (if) mounted on suitable supports. The roll 5L. being of twice the diameter of the roll 58. has an advantage over a roll of the same diameter as the roll 5b while assisting the top roll to open the end of the. bag tube into the diamond form. By referring to Fig. 1. it will be seen that when the bag bottom is being opened. roll 59 carries the underside of the tubing or bottom=corners of the bag forward of the top corners and thereby relieves a great amount of the strain to which the sides of the bottom are usually subject ed during the oya-ninp operation. This carrvin'g of the bottom tul'lltt' forward of the. tiip one. in lines the bottom of the diamond forward. thus starting it to fold in the proper direction against the bod i" of the bag tube. The particular type of side grippers shown in the drawings are fully described i my said prior Patent 974,704 and further description of the main features thereof are not deemed necessary herein except to say that when the grippers 62 come into contact with either of the sets of grippers 6:), as the same rot ate, they will actuate themselves into and down on to the tucks of the tubing and grip the tubing ti: the face of said rolls and after the grippers have passed out of contact with each other they will be drawn back against suitable stops by springs. The sidegrippers 65, 65 are constructed similarly to the side grippers 62 except that their outer surfaces are struck or turned on radii conforming to the radius of the roll 59 and the grippers 65 are also provided with hearing faces 66 on their outer sides which pass beneath rolls ($7 mounted on suitable brackets on the frame. which rolls keep the grippers ()5 in their innermost position to clamp the bag after the grippers as have passed from engagement with the grippers 6'2 and until 1 the bag bottom iscarried forwardly and down wardlv well within the influence of the grip or press roll 68. Aft er the faces 66 of the grippers pass beyond the action of the rolls 67. the bags are released. As will be noted, the foregoing described operation of causing the lower grippers to retain their hold upon the bag bottom until it is within the grip of the roll 68, is an important improvement in that it prevents the bag bottom from getting out of line sidewise and also helps to draw the paper steadilv forward and does notleave all the strain of said drawing to be borne by the connection P.

Pirotallv supported upon a transrersclr extending bar 69 are a pair of hubs 70. each of which has a pin 71 having a cam roll 7'2 iournaled thereon. the rolls 72 being held in constant engagement with cams 73 b the 1 ring 74 which is suitably secured to the hubs TI) to effect the desired result. The cams 73 are secured to a transversely extending shaft 75 suitablv mounted in hearings on the top of the machine and rotated as hereinafter described. Each hub has fixed thereto a folding rod 76 having a downwardly extending portion 77 outwardly bent as at 78 at its lower end. The e rods operate against the sides of the bag bottom and fold them inward and downward into the well known diamond form and hold the diamond form in its flattened condition while it passes under the press roll (58. The folding rods are shown in the drawingin their open or receiving position. The diamond form of the bag bottom. 13 its fiattened position. and the folding rot s at their inner or folding position are shown by dotted lines in Fig: 2. As will he noted. the cams 73 are so formedand timed as to transmit the proper motions to the folding rods 77 as the bag bottoms are presented successively to them.

As will be understood, all the shafts in the nn rhine are supported in suitable bearings and are driven in the proper directions by prt perlv sized and toothed gears, the same being indicated either in full or dotted lines in the drawing. but I do not deem it necessary to indicate the same by references.

The operation of the machine, briefly described. as is follows: The paper is drawn into the machine by the draw rolls 22'. :32 and becomes tucked tubing as it passes over the former. The tabs P are cut successively in the paper by the knife 17 with which cooperates the slidably slitted plate 15 and as the knife 17 withdraws from the paper it lifts with it the loose end of the tab which it has just cut so that the latter in its forward movement will be turned back by the turning bar 21. continues its forward movement, it passes between the creasing and slitting rolls 24 and 25 which crease Lhe tubing along the lines indiatcd at P". P and P and simultaneously therewith the slits P are cut. in the back face of the tubing. After leaving the slitting and creasing rolls, the tubing is drawn past the tuck openers 49 and into the opening rolls 58 and 59, the latter cutting the tubing by the knife 61 from the outer edges toward the center and leaving the uncut connection P between the bag lengths. The tuck openers are then moved to their innermost position. thus opening the side tucks of the tubing and innncdiately thereafter the side grippers 62 and U5 rotate into contact with each other and actuate themselves into and down 0 to the tucks oi the tubin gripping the atter to the rolls 5b and 59 at points where the and where the creases l. l have been made. and asthe said rolls and grippers rotate further. they form the corners and side edges of the bottom and open the bag bottom to substantialti' the shape shown in Fig. l. lit-fore the said shape is fully f rmed. the side folding rods are swung inwardly and f ld the sides of the bag bot tom into the well known diamond form as it is being dra u it forward toward the press roll 68.

As will be understood. any well known device may be used to paste and form the last flaps and clo the same. but I do not show an as they do not form any part of this invention.

The direction in which the paper travels in this machine is considered the forward one and the tubing. when cut through all of its plies and still connected with the preceding bag by connecting portion l is considered a having an end upon it and is so referred to throughout this specification and claims.

As will beohvious to those skilled in the As the paper tube" corners of the bag bottom are to be formed art, the various mechanisms of this mayet it will be obvious that various changes and modifications may be made in the parts 41nd arrangements of the parts without departin from the spirit of the invention and all suc changes and modifications are contemplated us come within the scope of the claims appended hereto.

I claim 1. In a paper bag machine, a tab cutting mechanism consistin of a bellows tube former, an opening ormed in one face of said former adjacent to its forward end, a plate supported and adapted to slide within said opening, a slot formed in said late, conforming to the shape of the ta required, rotating cutting means to codperate with said plate and cut a tab in the tubin as it is drawn forward over the former an means to en port said former 'and to operate said p ate and cutting means, substantially as specified.

2. In a paper bag machine, a pair of rotatable opening rolls one of which is a multiple of the other in diameter, said rolls being provided with side grippers atthe ends thereof, said grippers operating in pairs to g'gp the tubing, the grippers of each pair 'ng adapted to contact with each other to thereby project their ippin ends within and down onto the tuc s of tiie tubing and 40 to spread open the end of the tubing, means, associated with one of said rolls, to retract the grippers, a ressing roll, means to hold the tubing unti it is drawn forward into the bite of the pressing roll, means for outting a tab and turning it over on the face of the tubing, means for creasing said tubing, and side tuck opening means operating to open the tucks prior to the entrance of said side grippers into said tucks, substantially as specified.

3. In a a er bag machine, the combination of a l iell ows tube former, plate means supported by said former to travel with and support the paper at proper cutting positions, cutting means to cut and pull the loose end of a tab away from the tubing as the tubing is drawn forward, means to intercept the loose end of said tab and turn it over backward against the face of the tubing, and means to operate said supporting and cutting means, and draw the tubing forward.

4. In a paper bag machine, means for cuttinga tab in a aper tube while the same is moving and pn ling the tab away from the body of the paper tube, and stationary means in t e path of the tab to engage it and turn it back against the face of the tubing, substantially as specified.

5. In a paper bag machine, a bellows tube former, means for cutting a tab in the paper as it is drawn over the former, said cutting means being also adapted to pull the free end of the tab away from the tubing after it is cut, and a stationary bar in the path of the free end of the tab adapted to turn it back against the face of the tubin as the paper is moved forwardly, substantially as specified.

6. In a paper bag machine of the class specified, creasing-means consisting of suitably supported rolls, each of said rolls having a creasing blade, the blades being rigid y carried by said rolls and having their central portions cut away, said creasing g5 blades being adapted to come closely adja cent to each other as the rolls rotate, said creasing means operating to crease the tubing prior to the spreading of the diamond form of the bag bottom to thereby facilitate 0 the spreading of the diamond form, means for rotating said rolls, and means for spreading the diamond form of the bag bottom, substantially as specified.

7. In a paper bag machine of the class specified, creasing means consisting of suitably supported rolls, each of said rolls having a creasing blade mounted thereon and rigidly carried thereby, the central portions of said blades being cut away, said creasing blades being adapted to come closely adjacent to each other as the rolls rotate forwardly, each of said rolls being also pro-. vided with a creasing groove located at one side of the creasing blade carried by the roll, said. creasing means operating to crease the tubing prior to the time of spreading the diamond form of the bag bottom to thereby facilitate the spreading of said diamond form, means for rotating said rolls, and means for spreading the diamond form of the bag bottom, substantially as. specified.

8. In a paper bag machine of the class s cified, creasing means consisting of suita 1y supported rolls, each of said rolls being provided with a creasing blade rigidly carried thereby, the central portions of said blades being cut away, said creasing blades being adapted to come closely adjacent to each other as the rolls rotate forwardly, a second set of similar creasing blades carried by and located on said rolls a distance rearwardly of said firstv named creasing blades, said creasing means operating to crease the tubing rior to the time of spreading the diamond form of the bag bottom to thereby facilitate the spreading of said diamond form, and means for rotating said rolls, substantially as specified.

9. In a paper bag machine of the type specified, creasingmeans consisting of sun-- a ly supported rolls, each roll being provided wlth a. creasing blade ti 'dlv carried thereby, the central portions. 0 said blades being cut away and said creasing blades bemg adapted to come closely adjacent to each ot er as the rolls rotate forwardly, said rolls also being provided 'with a second set of similar creasing blades located rearwardly of the first set of said blades, said rolls being also provided with creasin grooves located adj aoent the creasing bla es, the blades of each roll coming opposite to and cooperating with the grooves of the other rolls as the two rolls rotate, said creasing means operating to crease the tubingprior to the time of spreading the diamond form of the bag bottom to thereby facilitate the spreading of said diamond form, and means for rotatin said rolls, substantially as specified.

10. n a paper bag machine, rotatably mounted rolls each having creasing blades carried therebv and formed with creasing grooves locate to one side of the blade, one of said rolls being provided with an additional creasing blade and the other roll having a creasing cgroove coiiperable therewith, said last name blade and groove being so located on the peripheries of the rolls to operate after the first named blades and grooves, substantially as specified.

11. In a paper bag machine, rotatably mounted rolls arranged on parallel axes, each of said rolls carrying two sets of circumferentially spaced creasing blades adapted to lap past each other when the rolls are rotated, each roll being provided with creasing grooves located to one side of the creasing blades, one of said rolls being provided with another creasing blade and the other roll having a creasin groove corpelrable therewith, substantial y as speci- 12. "Tu a paper ba ,anachine, rotatably mounted rolls, said rol 5 being provided with creasing blades adapted to lap past each other when the rolls are rotated, one of said rolls being provided with a further creasing blade adapted to take into a correspondinglp 1 located creasing groove on the opposite 1'01 and slitting knives carried by one of said rolls. substantiall as specified.

13. In a paper bag machine, means for cutting a tab from one face of a bellows sided tube of paper as it is drawn into the machine and turning the tab back on the tubing, rotatably mounted rolls. the latter being provided with slitting means operable to slit the opposite face of the tubing throu tab opening, substantiall i as specifie 14. In a paper bag mac ine, means to form tucked tubin means to draw said tubing into the mac 'ne, means to cut a tab from one face of said tubing and turn it back on to the face of the tubing, suitably supported 'tion with means to I openers mo ably rolls and means to rotate them, slitting means carried by said rolls. creasin blades and groo es carried bv said rolls an adapted to lap past each other as they rotate, and crease t 1e opposite fa es of the tubing and their tucks in opposite directions toward each other. substantially as specified.

15. In a paper bag machine, the combimr orm tucked tubing and draw it into the machine, of means to cuta tab from one face of said tubing and turn it back on to the face of the tubing, rotatably mounted rolls, the latter bein' provided with slitting means. creasing blades and grooves. said blades being adapted to lap past each other us they rotate, and a creasing blade carried by one of said rolls cooperublc with a correspondingly located groove in the opposite roll. substantially as specified.

1G. in a paper bag nuu-hine. side tuck mounted. means for moving said 0 eners toward and from the side tucks of tiie tubing as the latter is drawn through the machine. suid tuck openers being each provided with thin parallelsided inner extensions adapted to remain continui'iusly within thetucks of the tubing. and means for spreading the diamond form of the ba bottom operating on the tubing after the tui iing has passed vby said tuck openers, substantially as specified. a 14'. In :1 paper bag machine. side tuclt openers movably mounted toward and from the side tucks of the tubing. means for m ing said tuck openers upwardly simultaneously with the inward movement and downwardly simultaneously with the outward movement. said side tuck openers operating to spread the side tucks of the tubing upurt prior to and to facilitate the entrance 'to the tucks of a diamond "t'orni bottom spreading mechanism. and mechanism for spreadingthe diamond form of the bag bottom. substantially as specified.

18. In a paper bag machine. side tuck openers having a combined simultaneous inward and upward movement and combined simultaneous outward and downward movement. said side tuck openers operating to spread the side tucks of the tubing apart previous to and to fucilitatuthe entrance to said tucks of a diamond form bottom spreading mechanism. and inecluiui m for spreading the diamond form of the bag bottom. substantially as specified.

19. In a paper bag machine of the class specified and for the purpose of spreading the side tucks of the tubing apart previous to and to facilitate the entrance to said tucks. of the bottom or diamond form spreading mechanism, side tuck openers movable toward and from the side tucks of the tubing, inclined supports on which said openers are mounted, and mechanism to;-

' line of travel of the chine and at an ange to a plane at right spreading the diamond form of the bag bottom operating on the tubing after said side tuck openers. substantially as specified.-

. '20. In a paper bag machine, side tuck openers oscillatable aboiit axes located in a vertical plane extending transversely to the aper through the maangles to the first named plane, said tuck openers operating to spread the side tucks of the tubing apart prior to and to facilitate the entrance to said tucks, of the bottom or diamond form spreading mechanism, and

ating said openers so that when in their innermost position they are in a central line trom between the feed rolls to and between the opening rolls and when at their outermost position are on a line tangential to the periphery of one of the opening rolls, substantially as specified,

22. In a paper bag machine, side tuck openers each of which is wedge shaped in transverse and longitudinal cross section and provided with a thin, parallel sided, inner extension extending from the said wedge shaped portion, said tuck openers operating to spread the side tucks of the tubing apart prior to and to facilitate the entrance to said tucks of the bottom or diamond form spreadin mechanism, and spreading mechanism, su stantially as specified.

23. In a paper bag machine, side tuck openers each of which is wedge shaped in transverse and longitudinal cross section and provided with a thin, parallel sided, inner extension extending from the said wedge shaped portion and a guide flange on the outer edge of each of saidvopeners, substantially as specified.

24. In a paper bag machine, side tuck openers pivotally mounted and oscillatable about axes inclined from the vertical, each of said openers having an extension wedge shaped in transverse and longitudinal cross sections and a thin, parallel sided inner por tion, substantially as specified.

25. In a paper bag machine, a pair of opening rolls, the diameter of one of said rolls being a multiple of the other, the roll I of smaller diameter having a side gripper at each end thereof and the larger roll having at least two side grippers at each end thereof, means for rotating said rolls and grippers, the latter operating in pairs to grip the tubing, each pair being adapted to contact with each other and thereby themselves to project their gripping ends within and down onto the tucks of the tubing. means for spreading the side tucks of thetuhing apart previous to and to facilitate the entrance of said side grippers to the tucks, said means comprising side tuck openers movable toward and from the side tucks of the tubing. and means for imparting an upward increment simultaneously with the inward movement of said tuck openers and a downward movement simultaneously with their outward movement. substantially as specified.

26. In a paper bag machine,- a pair of rotatabie opening rollsone of which is a multiple of the other in diameter, said rolls being provided with side grippers at the ends thereof, said grippers operating in pairs to grip the tubing, the grippers of each pair being adapted to contact with each other to thereby project their gripping ends within and down on to the tucks of the tubing and to spread open the end of the tubing, means to retract the grippers associated with one of said rolls, means to hold the grippers as sociated with the other roll in operative position after the grippers of the first named roll have been retracted to thereby hold the tubing until it is drawn forward into the bite of a pressing roll, means for cutting a tab, and creasing means, substantially as specified.

27. In a paper bag machine, in combination, a pair of opening rolls, side grippers located at the ends of said rolls and cooperating therewith to open the end of a bag tube, folding rods 76, means for, oscillating saidrods' about axes substantially perpendicular to the line of travel of'the paper tubeto thereby close said bottom to the diamond form, creasing means, and side tuck openers having combined inwardand "upward and outward and downward movements and operating to open the tucks prior to the spreading of the bag bottom, substantially as specified.

In a paper bag machine of the character specified, in combination, a bellows tube former. a slotted movable platc'supported by said former. and tab cutting means including a knife beveled inwardly on its inner side to thereby retain the tab therein after the latter is cut and to pull the loose end of the tab away from the 'end of the tubing preparatory to turning said tab back onto the tubing, substantially as specified.

'29. In a paper bag machine, opening rolls. side grippers rotatable with each of said rolls and located on the ends thereof, said gri 'ipers contacting each other as they are rotated to thereby themselves project their gripping ends inwardly to grip the tucks of the tubing. the grippers associated with one of said rolls being released and automatically retracted after passing from engagement with the grippers of the other roll,

. openers movab means for retaining the grippers of the last named roll in operative position after having passed from engagement with the grippers of the other roll, and tab cutting means substantially as specified.

30.'ln -a paper bag machine, side tuck e toward and from the side tucks of the paper tube as it Basses through the machine, said openers aving also a movement transverse to their inward and outward movements and simultaneously therewith, said side tuck openers operating to spread the side tucks of the tubing apart prior to and to facilitate the entrance to said tucks of the diamond form bottom spreading mechanism, and 5 reading mechanism, substantially as speci ed.

ASA L. PARRISH Witnesses:

WILLIAM A. GEIGEB. Josnrn HARRIs;

Correctlcns In Letters Patent No. 1,099,312.

It is hereby certified that in Letters Patent No. 1,099,312, 'granted June 9, 1914, upon the application of L. Parrish, of South Bend, Indiana for an improvement in PapeFBag Machines, errors appear in the printed specification requiring correction BS follows: Page 5, line 74, for the words as is follows read is aafollows; page 7; line 24 for the word blade read blades; page 8, li 51 f the word extension read portion and lines 53-54 for the word portion read mm; and-that the said Letters Patent should be read with these corrections I therein that the-same may conform to the record of the case in the Patent ()Hice.

Signedand sealed this 11th day of August, A. 1)., 1914.

' J. T. NEWTON,

Acting oommiamner' of Patents. 

